Unicoi County Power Outage History
2019–2025 · Tennessee
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 28, 2021 | 2 hrs | 879 (7%) | Unnamed event |
| Dec 24, 2020 | 2 hrs | 766 (6%) | Heavy Snow |
| Jan 16, 2022 | 8 hrs | 746 (6%) | Heavy Snow |
| Aug 2, 2021 | 1 hrs | 725 (6%) | Unnamed event |
| Apr 1, 2023 | 10 hrs | 692 (6%) | Unnamed event |
Over the 7 years from 2019 to 2025, Unicoi County recorded 51 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Unicoi County started March 28, 2021, lasting 2 hours and leaving up to 879 customers without power (7% of the county) at its peak.
January has historically been the worst month for outages in Unicoi County, with 7 events recorded during that month across the dataset.
Based on this history, Unicoi County earns a Reliability Grade of A, placing it in the 96th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Unicoi County's outage profile
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Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Unicoi County.
| County | Grade | National percentile |
|---|---|---|
| Dyer County | A | 96th |
| DeKalb County | A | 97th |
| Lauderdale County | A | 95th |
| Morgan County | A | 95th |
| Putnam County | A | 98th |
FAQ
How often does power go out in Unicoi County?
Between 2019 and 2025, Unicoi County recorded 51 outage events, averaging 3.3 hours each.
What is Unicoi County's reliability grade?
Unicoi County has a Reliability Grade of A, in the 96th national percentile.
What was the worst power outage in Unicoi County?
The worst outage on record started March 28, 2021, lasting 2 hours and affecting up to 879 customers.